Abstract: Since this syringe has projections provided on the rear surface of a flange of a syringe barrel, when it is inserted in an insertion groove of a cylinder holder, the tips of projections are compressed and the flange is fixed. Consequently, even when a solution having high viscosity is injected at higher pressure, breakage does not occur easily. Further, pressure-receiving area may also be increased by providing a guide defining mounting direction of a syringe, alternatively, a positioning mechanism may be provided so as to obtain mounting at a correct position, or the surface of a flange may be roughened.

Abstract: A cylinder adapter holds a cylinder flange of a liquid syringe with movable holders that are selectively openable and closable. The cylinder adapter can reliably hold the liquid syringe.

Abstract: In the present invention, a freely rotatable rotating part in which a single multidirectional switch is mounted is assisted to an initial position by a rotation recovery means, and the rotation from this initial position is detected by a rotation detection means. As a result, inclination of a control part toward the front or rear or toward the right or left or rotation of the control part toward the right or left can each be individually detected, and when this inclination or rotation of the control part is suspended, the control part can be automatically returned to the initial position. Accordingly, an input control device, in which a control part that has been inclined toward the front or rear or toward the right or left or rotated to the right or left automatically returns to its initial position, can be realized by a simple construction.

Abstract: Since this syringe has projections provided on the rear surface of a flange of a syringe barrel, when it is inserted in an insertion groove of a cylinder holder, the tips of projections are compressed and the flange is fixed. Consequently, even when a solution having high viscosity is injected at higher pressure, breakage does not occur easily. Further, pressure-receiving area may also be increased by providing a guide defining mounting direction of a syringe, alternatively, a positioning mechanism may be provided so as to obtain mounting at a correct position, or the surface of a flange may be roughened.

Abstract: A perfusion system for off-pump coronary artery bypass is provided in order to make the off-pump coronary artery bypass easier and safer and to restrict the amount of bleeding to a degree for not affecting operations by occluding the vessel in concurrency with the perfusion, including a blood removal portion, a pump, and a perfusion portion for returning blood pumped out by the pump in the form of an injection of the blood in pulses in response to a diastolic phase of the heart.

Abstract: The present invention provides liquid injector 100 wherein syringe 210 sucks a liquid from liquid tank 200 in a suck state in which connection switch mechanism 105 connects syringe tube 103 to tank tube 102, and syringe 210 injects the liquid into a patient in an injection state in which connection switch mechanism 105 connects syringe tube 103 to patient tube 101. Since connection switch mechanism 105 blocks patient tube 101 in the suck state, the liquid does not flow back into syringe 210 from the patient. Since tank tube 102 is blocked in the injection state, the liquid does not flow back into liquid tank 200 from syringe 210. Therefore, it is possible to provide liquid injector 100 capable of preventing a backflow of the liquid from the patient to syringe 210 or liquid tank 200 in the structure in which syringe 210 sucks and injects the liquid from liquid tank 200 into the patient.

Abstract: An automatic injection device has piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward so that the device can hold a plurality of syringes and operates injection or suction in each syringe independently. This device also has a mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state. This structure effectively prevents liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.

Abstract: The liquid syringe has various kinds of data items recorded in the two-dimensional code format. The liquid injector optically reads the two-dimensional codes, decodes them, and executes a predetermined operations corresponding to the decoded results. Recording, for example, a variable pattern for the liquid of interest in the two-dimensional code format on the liquid syringe makes it possible for the liquid injector to inject the liquid in accordance with the predetermined variable pattern.

Abstract: An automatic injection device has piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward so that the device can hold a plurality of syringes and operates injection or suction in each syringe independently. This device also has a mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state. This structure effectively prevents liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.

Abstract: The display device for tomographic image has a display, a hard disk, a mechanical slide-bar for setting a display speed for series of tomographic images and a controller. This device is used for displaying tomographic images in the manner of paging on the display for the series based on a speed set by the mechanical slide-bar.

Abstract: In a liquid injector, a piston is pressed by a piston-driving mechanism into a cylinder of a liquid syringe that is held by a cylinder-holding structure, and a stress detection means detects the stress of this pressure. The piston-driving mechanism is displaceably supported by the main body of the injector, and the stress detection means, which is fixed to this injector main body, detects the stress that acts upon the piston-driving mechanism. The configuration of this liquid injector is simple because the stress detection means is not arranged on the movable part of the piston-driving mechanism, and the liquid injector therefore exhibits improved productivity and reliability.

Abstract: A leak detector sequentially emits pulse signals toward a human body at a position at which a needle is inserted, detects pulse signals reflected inside of the human body, and measures a time interval between the emission and the detection for each of the pulse signals. Then, the leak detector calculates the difference between the measured interval and a predetermined time interval, and generates a leak warning for notification when the difference exceeds an acceptable range. Since a swelling on the surface of the human body causes a path of the pulse signal to extend, the leak detector can detect, based on the extended signal path, that the needle has come off a blood vessel.

Abstract: A liquid injector displays a plotting chart image whose vertical axis represents liquid injection rates and horizontal axis represents liquid injection times. When an injection graph which represents a liquid injection rate at each quantity of the liquid to be injected is entered into the displayed plotting chart image, the liquid injector controls operation of an injection performing means according to the injection graph and a time which has elapsed from the start of injection of the liquid. The rate at which the liquid is injected can thus be changed as desired with time according to the injection graph.

Abstract: A liquid injector stores data of operating conditions of a liquid injection mechanism for many regions to be imaged of a human body, and also stores data of schematic images of a plurality of body sections of the human body and schematic images of many regions to be imaged of the human body in association with each other. The liquid injector displays the schematic images of the body sections in the shape of a human body. When one of the displayed schematic images of the body sections is selected, the liquid injector displays the schematic images of the corresponding regions to be imaged. When one of the schematic images of the corresponding regions is selected, the liquid injector reads the data of corresponding operating conditions, and controls operation of the liquid injection mechanism according to the read operating conditions.

Abstract: A liquid injector has a gripping detector disposed on the front face of a piston pusher for detecting when a piston is pushed by the piston pusher for thereby detecting when a piston flange on the piston is gripped by a pair of engaging claws on the piston pusher. The piston pusher is prevented from being actuated when the piston flange is not gripped by the engaging claws.

Abstract: Since this syringe has projections provided on the rear surface of a flange of a syringe barrel, when it is inserted in an insertion groove of a cylinder holder, the tips of projections are compressed and the flange is fixed. Consequently, even when a solution having high viscosity is injected at higher pressure, breakage does not occur easily. Further, pressure-receiving area may also be increased by providing a guide defining mounting direction of a syringe, alternatively, a positioning mechanism may be provided so as to obtain mounting at a correct position, or the surface of a flange may be roughened.

Abstract: A perfusion system for off-pump coronary artery bypass is provided in order to make the off-pump coronary artery bypass easier and safer and to restrict the amount of bleeding to a degree for not affecting operations by occluding the vessel in concurrency with the perfusion, including a blood removal portion, a pump, and a perfusion portion for returning blood pumped out by the pump in the form of an injection of the blood in pulses in response to a diastolic phase of the heart.

Abstract: A contrast media injection apparatus has (a) a manifold having a port for connection of catheter, a port for connection of contrast media line, a port for connection of pressure-monitoring line and a port for connection of physiological saline solution line, (b) a pressure-monitoring line connected to the port for connection of pressure-monitoring line and having a cutoff mechanism in the middle, (c) a contrast media line connected to the port for connection of contrast media line, and (d) a contrast media injector connected to the back end of the contrast media line. Using the injection apparatus, the monitoring of pulsation and the injection of contrast media can be conducted under no radiation exposure and, moreover, the injection of contrast media can be conducted simply without requiring the complex operation of valve switching.

Abstract: The display device for tomographic image has a display, a hard disk, a mechanical slide-bar for setting a display speed for series of tomographic images and a controller. This device is used for displaying tomographic images in the manner of paging on the display for the series based on a speed set by the mechanical slide-bar.

Abstract: An automatic injection device has piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward so that the device can hold a plurality of syringes and operates injection or suction in each syringe independently. This device also has a mechanism for prohibiting the backward-moving of the piston holder of a second head when the piston holder of a first head is in a forward-moving state and the piston holder of the second head is in a stopped state. This structure effectively prevents liquid from being undesirably mixed and the injection amount thereof from becoming less accurate.